A Review of Bernoulli’s Fallacy
Michel Baudin's Blog
by Michel Baudin
2d ago
Aubrey Clayton’s book, Bernoulli’s Fallacy, covers the same ground as Jaynes’s Probability Theory: The Logic of Science, for a broader audience. It is also an easier read, at 347 pages versus 727. In addition, the author also discusses the socio-political context of mathematical statistics in the late 19th and early 20th centuries. According to his […] The post A Review of Bernoulli’s Fallacy appeared first on Michel Baudin's Blog ..read more
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Process Control and Gaussians
Michel Baudin's Blog
by Michel Baudin
3w ago
The statistical quality profession has a love/hate relationship with the Gaussian distribution. In SPC, it treats it like an embarrassing spouse. It uses the Gaussian distribution as the basis for all its control limits while claiming it doesn’t matter. In 2024, what role, if any, should this distribution play in the setting of action limits […] The post Process Control and Gaussians appeared first on Michel Baudin's Blog ..read more
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Toyota’s job rotation policy
Michel Baudin's Blog
by Michel Baudin
1M ago
Kerry Creech became President of Toyota Motor Manufacturing of Kentucky (TMMK) in July 2023. He had joined Toyota as a team member in powertrain quality control in Georgetown, KY in 1990. Toyota’s policy of developing people and promoting from within made this career possible. Kerry Creech got a degree in electrical and electronics engineering in […] The post Toyota’s job rotation policy appeared first on Michel Baudin's Blog ..read more
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Measurement Errors
Michel Baudin's Blog
by Michel Baudin
2M ago
Like spouses in murders, errors are always the prime suspect when measurements go awry. As soon Apollo 13 had a problem, a Mission Control engineer exclaimed, “It’s got to be the instrumentation!” It wasn’t the instrumentation. In general, however, before searching for a root cause in your process, you want to rule out the instrumentation. […] The post Measurement Errors appeared first on Michel Baudin's Blog ..read more
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Gaussian (Normal) Distributions In Science
Michel Baudin's Blog
by Michel Baudin
2M ago
The Gaussian – also known as “Normal” – distribution is used and abused in many domains. In Manufacturing, this includes quality assurance, supply-chain management,  and human resources. This is the first in a series of posts aimed at understanding the range of applicability of this tool.  Googling uses of the normal distribution produces nearly 1 […] The post Gaussian (Normal) Distributions In Science appeared first on Michel Baudin's Blog ..read more
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Greatest Hits of 2023
Michel Baudin's Blog
by Michel Baudin
3M ago
This blog’s greatest hits of 2023: Nissan’s Quick Response Quality Control (QRQC) Runners, Repeaters, and Strangers among Components Where do “Value Stream Maps” come from? The Fox Knows Many Things, But The Hedgehog Knows One Big Thing Deming’s Point 4 of 14 – End the practice of awarding business on the basis of a price […] The post Greatest Hits of 2023 appeared first on Michel Baudin's Blog ..read more
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Tolerances
Michel Baudin's Blog
by Michel Baudin
4M ago
Online forums do not often discuss quality fundamentals like characteristics and tolerances. You find arguments about process capability, but the requirements for process capability are taken as given. Tolerances on characteristics are objectives that production is expected to meet, and deserve an exploration of what they mean and how they are set. Quality Characteristics The […] The post Tolerances appeared first on Michel Baudin's Blog ..read more
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Process Capability Indices
Michel Baudin's Blog
by Michel Baudin
4M ago
Within the quality profession, a capable process is one with a high . In the field, it is not quite so simple. My colleague Joerg Muenzing recently shared concerns about the process capability indices: “Many manufacturers that I know struggle with incapable processes. Intellectually, people understand the concept of capability, but are unable to effectively […] The post Process Capability Indices appeared first on Michel Baudin's Blog ..read more
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Orbit Charts, Revisited
Michel Baudin's Blog
by Michel Baudin
6M ago
Data visualization is not just the art of presenting data to an audience. Upstream from this, you use visualizations in data cleaning to identify defective points, and in exploratory analysis, to identify patterns of interest. Then, you validate these patterns with a more formal analysis. Once confident that you have findings of value to communicate, […] The post Orbit Charts, Revisited appeared first on Michel Baudin's Blog ..read more
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HR: The elephant in the room for psychological safety
Michel Baudin's Blog
by Michel Baudin
7M ago
In his latest column in Quality Digest, Mark Graban wrote the following about psychological safety: “How do leaders cultivate the conditions in which employees feel safe enough to speak up and participate in continuous improvement? Clark argues that leaders need to: 1) model vulnerable acts; and 2) reward vulnerable acts. For example, leaders must model […] The post HR: The elephant in the room for psychological safety appeared first on Michel Baudin's Blog ..read more
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